CN105673202A - Five-stroke engine - Google Patents
Five-stroke engine Download PDFInfo
- Publication number
- CN105673202A CN105673202A CN201610084475.2A CN201610084475A CN105673202A CN 105673202 A CN105673202 A CN 105673202A CN 201610084475 A CN201610084475 A CN 201610084475A CN 105673202 A CN105673202 A CN 105673202A
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- Prior art keywords
- cylinder
- pressure
- low
- turbine
- air inlet
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/013—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust-driven pumps arranged in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/028—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle five
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Supercharger (AREA)
Abstract
The invention discloses a five-stroke engine. The five-stroke engine comprises a first cylinder, a second cylinder, an auxiliary cylinder and a boost mechanism, wherein an intake port and an exhaust port of the first cylinder are both connected with the boost mechanism; the exhaust port of the first cylinder is connected with an intake port of the auxiliary cylinder; an intake port and an exhaust port of the second cylinder are both connected with the boost mechanism; the exhaust port of the second cylinder is connected with the intake port of the auxiliary cylinder; and an exhaust port of the auxiliary cylinder is connected with the boost mechanism. The five-stroke engine realizes out-cylinder low-temperature pressurization, increases the intake density, relieves in-cylinder knocking phenomenon while satisfying the power requirement, improves the engine isometry degree, optimizes the combustion phase, improves the heat efficiency, and on the other hand, reduces the exhaust temperature, and protects turbine blades.
Description
Technical field
What the present invention relates to is a kind of technology of field of internal combustion engine, specifically a kind of five two-stroke engines.
Background technology
In order to reduce oil consumption and the exhaust emissions amount of engine, major measure has: engine high pressure-charging miniaturization, in-cylinder direct-jet,Intelligent thermal management and cooling EGR (ExhaustGasRecirculation, EGR) etc. But the improvement of these measures effectFruit is limited.
The energy dissipation causing due to engine exhaust, up to more than 30%, utilizes exhaust energy can reduce energy consumption. By adoptingTurbocharging technology and Sydney Atkinson circulation can better utilize exhaust energy. In five two-stroke engines, the profit of exhaust energyWith by increase assistant cylinder carry out mesenchymal again expansion process realize. Five two-stroke engines, this concept is at first by SchmitzPropose, improve expansion ratio by two expansion cycles.
Through the retrieval of prior art is found, Chinese patent literature CN103016148A, open day is 2013 04Month 03 day, disclose a kind of four-stroke-cycle and combined circulation engine with two-stroke, comprise two four-stroke combustion cycle cylinders and twoThe non-burning circulating air of two strokes cylinder, described two four-stroke combustion cycle cylinders and two the non-burning circulating air of two strokes cylinders form oneWorking cell, two four-stroke combustion cycle cylinders are connected by pressure stabilizing cavity with two the non-burning circulating air of two strokes cylinders, described internal combustionMachine comprises one or more working cells, and fresh air enters after engine, is introduced into four-stroke combustion cycle cylinder, goes through " air inlet-compression-acting-exhaust " after four strokes, high-temperature fuel gas is discharged into pressure stabilizing cavity, then enters the non-burning circulating air of two strokes cylinder, experienceAfter " air inlet-exhaust " two strokes, be discharged from engine. But this technology utilizes existing four-cylinder to transform, and makes four-stroke-cycle cylinderBe consistent with the compression ratio of two-stroke cylinder, two-stroke cylinder discharge capacity and expansion do not likened to Optimized Matching, cannot be at utmostUtilize the super expansion of two-stroke cylinder; Become two cylinders from original four cylinders, engine power performance significantly reduces, and increases compressionThan time, also can cause engine severe knock, affect engine operation.
Chinese patent literature CN204419348U, open day is on 06 24th, 2015, discloses a kind of for internal combustionThe two-step supercharging train of mechanism 101 of machine, as shown in Figure 1, this booster body system comprises high-pressure turbine 102, it is connected to internal combustionThe exhaust manifold 103 of engine; Low-pressure turbine 104, low-pressure turbine entrance 105 is connected to high-pressure turbine and low-pressure turbine outlet 106Be connected to the gas extraction system 107 of engine; Low-pressure compressor 108, low-pressure compressor entrance 109 is connected to environment and low pressure is calmed the angerMachine outlet 110 is connected to high-pressure compressor 111, and described high-pressure compressor is also connected to the inlet manifold 112 of explosive motor, itsMesohigh turbine is provided with the high pressure bypass line 114 that comprises the controlled by-passing valve 113 of high pressure, and low-pressure turbine is provided with and comprises that low pressure is subject toThe low pressure bypass line 116 of control by-passing valve 115, and Controlled valve 117 is arranged between high-pressure turbine and low-pressure turbine. But this systemDo not comprise expansion cylinder, in the process of turbocharging coupling, some load conditions exist cylinder combustion gas directly to pass through waste gasBy-passing valve is discharged, and cannot realize making full use of exhaust.
Summary of the invention
The present invention is directed to prior art above shortcomings, propose a kind of five two-stroke engines.
The present invention is achieved by the following technical solutions:
The present invention includes: the first cylinder, the second cylinder, assistant cylinder and booster body, wherein: the air inlet port of the first cylinderAll be connected with booster body with exhaust port, and the exhaust port of this first cylinder is connected with the air inlet port of assistant cylinder, the second gasThe air inlet port of cylinder is all connected with booster body with exhaust port, and the air inlet port of the exhaust port of this second cylinder and assistant cylinderBe connected, the exhaust port of assistant cylinder is connected with this booster body.
Described the first cylinder and the second cylinder are four-stroke-cycle.
Described booster body comprises: high-pressure side turbine, low-pressure end turbine, high-pressure side compressor and low-pressure end compressor,Wherein: one end of high-pressure side turbine respectively with exhaust port, the exhaust port of the second cylinder and the row of assistant cylinder of the first cylinderGas port is connected, and its other end is connected with low-pressure end turbine, one end of high-pressure side compressor respectively with the air inlet port of the first cylinderBe connected with the air inlet port of the second cylinder, its other end is connected with low-pressure end compressor.
Between described high-pressure side compressor and low-pressure end compressor, be provided with low-pressure end water-cooled charge air cooler.
The end that is connected with cylinder of described high-pressure side compressor is provided with high-pressure side water-cooled charge air cooler.
Technique effect
Compared with prior art, the present invention realizes the outer low temperature supercharging of cylinder, has improved density of the induced air, slow when meeting power requirementSeparate phenomenon of detonation in cylinder, improved engine degree of constant volume, optimized combustion phase, improved the thermal efficiency; Reduced exhaust simultaneouslyTemperature, protection turbine blade.
Brief description of the drawings
Fig. 1 is existing two-step supercharging train of mechanism structural representation;
Fig. 2 is structural representation of the present invention;
In figure: 101 two-step supercharging trains of mechanism; 102 high-pressure turbines; 103 exhaust manifolds; 104 low-pressure turbines; 105 is lowPress turbine inlet; 106 low-pressure turbine outlets; 107 gas extraction system; 108 low-pressure compressors; 109 low-pressure compressor entrances; 110Low-pressure compressor outlet; 111 high-pressure compressors; 112 inlet manifold; The controlled by-passing valve of 113 high pressure; 114 high pressure bypass lines;115 low-pressure controlled by-passing valves; 116 low pressure bypass lines; 117 Controlled valves; 201 low-pressure end compressors; 202 low-pressure end water-cooledsCharge air cooler; 203 high-pressure side compressors; 204 high-pressure side water-cooled charge air coolers; 205 first cylinders; 206 assistant cylinders; 207Two cylinders; 208 master cylinder belly pipe roads; 209 high-pressure side turbines; 210 low-pressure end turbines.
Detailed description of the invention
Below embodiments of the invention are elaborated, the present embodiment is implemented under taking technical solution of the present invention as prerequisite,Provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment
As shown in Figure 1, the present embodiment comprises: the first cylinder 205, the second cylinder 207, assistant cylinder 206 and booster body,Wherein: the air inlet port of the first cylinder 205 is connected with booster body with exhaust port, and the exhaust port of this first cylinder 205 withThe air inlet port of assistant cylinder 206 is connected, and the air inlet port of the second cylinder 207 is connected with booster body with exhaust port, and thisThe exhaust port of two cylinders 207 is connected with the air inlet port of assistant cylinder 206, the exhaust port of assistant cylinder 206 and this superchargingMechanism is connected.
Described booster body comprises: high-pressure side turbine 209, low-pressure end turbine 210, high-pressure side compressor 203 and lowPressure side compressor 201, wherein: one end of high-pressure side turbine 209 respectively with exhaust port, second cylinder of the first cylinder 205207 exhaust port is connected with the exhaust port of assistant cylinder 206, and its other end is connected with low-pressure end turbine 210, high-pressure sideOne end of compressor 209 is connected with the air inlet port of the second cylinder 207 with the air inlet port of the first cylinder 205 respectively, its anotherEnd is connected with low-pressure end compressor 201.
Between described high-pressure side compressor 203 and low-pressure end compressor 201, be provided with low-pressure end water-cooled charge air cooler 202.
The end that is connected with cylinder of described high-pressure side compressor 203 is provided with high-pressure side water-cooled charge air cooler 204.
The first described cylinder 205 and the exhaust port of the second cylinder 207 are respectively by master cylinder belly pipe road 208 and high-pressure sideTurbine 209 is connected.
Described low-pressure end compressor 201 sucks fresh air inlet mesenchymal, and after low-pressure end water-cooled charge air cooler 202,Enter again high-pressure side compressor 203, obtain the air inlet mesenchymal of high pressure low temperature finally by high-pressure side water-cooled charge air cooler 204, and send intoOne cylinder 205 and the second cylinder 207. Experience " air inlet-compression-acting-exhaust " process in four-stroke-cycle cylinder, the first cylinder 205With 360 ° of crank angle (CAD) phase differences of the second cylinder 207, its course of work is as shown in table 1.
Table 1 engine working process table
The high-temp waste gas that the first described cylinder 205 and the second cylinder 207 are discharged alternately enter assistant cylinder 206 and master cylinder straightIn blowpipe road 208. Enter waste gas in assistant cylinder 206 through " air inlet (expansions)-exhaust " process, i.e. external again swollenSwollen acting, as shown in table 1. The waste gas directly entering in master cylinder belly pipe road 208 without assistant cylinder 206 directly drives high pressureEnd turbine 209 is worked, and then enters low-pressure end turbine 210. The same successively process of waste gas of discharging from assistant cylinder 206High-pressure side turbine 209 and low-pressure end turbine 210. Make to enter the useless of high-pressure side turbine 209 and low-pressure end turbine 210Gas is continuous, has realized the continuous operation of turbine, is worked by the compressor that turbine drives is corresponding, realizes plenum.
Compared with prior art, the present invention realizes the outer low temperature supercharging of cylinder, has improved density of the induced air, slow when meeting power requirementSeparate phenomenon of detonation in cylinder, improved engine degree of constant volume, optimized combustion phase, improved the thermal efficiency; Reduce on the other handDelivery temperature, protection turbine blade, overall fuel consumption reduction more than 15%.
Claims (4)
1. five two-stroke engines, is characterized in that, comprising: the first cylinder, the second cylinder, assistant cylinder and booster body,Wherein: the air inlet port of the first cylinder is all connected with booster body with exhaust port, and the exhaust port of this first cylinder and assisted gasThe air inlet port of cylinder is connected, and the air inlet port of the second cylinder is all connected with booster body with exhaust port, and the exhaust of this second cylinderPort is connected with the air inlet port of assistant cylinder, and the exhaust port of assistant cylinder is connected with this booster body.
2. five two-stroke engines according to claim 1, is characterized in that, described booster body comprises: high-pressure side turbineMachine, low-pressure end turbine, high-pressure side compressor and low-pressure end compressor, wherein: one end of high-pressure side turbine respectively with the first gasExhaust port, the exhaust port of the second cylinder and the exhaust port of assistant cylinder of cylinder are connected, its other end and low-pressure end turbine phaseConnect, one end of high-pressure side compressor is connected with the air inlet port of the first cylinder and the air inlet port of the second cylinder respectively, its other end andLow-pressure end compressor is connected.
3. five two-stroke engines according to claim 1 and 2, is characterized in that, described the first cylinder and the second cylinder are equalFor four-stroke-cycle.
4. five two-stroke engines according to claim 3, is characterized in that, described high-pressure side compressor and low-pressure end are calmed the angerBetween machine, be provided with low-pressure end water-cooled charge air cooler, the end that is connected with described cylinder of high-pressure side compressor is provided with high-pressure side water-cooled charge air cooler;
Described low-pressure end compressor sucks fresh air inlet mesenchymal, and after low-pressure end water-cooled charge air cooler, then enter high-pressure sideCompressor, obtains the air inlet mesenchymal of high pressure low temperature finally by high-pressure side water-cooled charge air cooler, and sends into the first cylinder and the second cylinder,Experience " air inlet-compression-acting-exhaust " process in four-stroke-cycle cylinder, 360 ° of the crank angle phase differences of the first cylinder and the second cylinder;The high-temp waste gas that the first cylinder and the second cylinder are discharged alternately enters in assistant cylinder and master cylinder belly pipe road, enters in assistant cylinderWaste gas is through " air inlet-exhaust " process, and external expansion acting again, directly enters master cylinder belly pipe road without assistant cylinderIn waste gas directly drive high-pressure side turbine rotor, then enter low-pressure end turbine, the waste gas of discharging from assistant cylinder is sameSuccessively through high-pressure side turbine and low-pressure end turbine, the waste gas that makes to enter high-pressure side turbine and low-pressure end turbine is continuous,Realize the continuous operation of turbine, worked by the compressor that turbine drives is corresponding, realized plenum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610084475.2A CN105673202A (en) | 2016-02-14 | 2016-02-14 | Five-stroke engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610084475.2A CN105673202A (en) | 2016-02-14 | 2016-02-14 | Five-stroke engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105673202A true CN105673202A (en) | 2016-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610084475.2A Pending CN105673202A (en) | 2016-02-14 | 2016-02-14 | Five-stroke engine |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IE36309B1 (en) * | 1971-04-23 | 1976-09-29 | Goetaverken Ab | A supercharged two stroke internal combustion engine |
| JPS59113239A (en) * | 1982-12-18 | 1984-06-29 | Yoshitaka Shimizu | Double expansion type internal-combustion engine |
| US20020050253A1 (en) * | 2000-10-26 | 2002-05-02 | Gerhard Schmitz | Five-stroke internal combustion engine |
| US7143725B1 (en) * | 2005-11-22 | 2006-12-05 | Lung Tan Hu | Dual six-stroke self-cooling internal combustion engine |
| CN103266950A (en) * | 2013-05-09 | 2013-08-28 | 刘红旗 | Oil water fuel composite exhaust gas powered two-stroke engine |
-
2016
- 2016-02-14 CN CN201610084475.2A patent/CN105673202A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IE36309B1 (en) * | 1971-04-23 | 1976-09-29 | Goetaverken Ab | A supercharged two stroke internal combustion engine |
| JPS59113239A (en) * | 1982-12-18 | 1984-06-29 | Yoshitaka Shimizu | Double expansion type internal-combustion engine |
| US20020050253A1 (en) * | 2000-10-26 | 2002-05-02 | Gerhard Schmitz | Five-stroke internal combustion engine |
| US7143725B1 (en) * | 2005-11-22 | 2006-12-05 | Lung Tan Hu | Dual six-stroke self-cooling internal combustion engine |
| CN103266950A (en) * | 2013-05-09 | 2013-08-28 | 刘红旗 | Oil water fuel composite exhaust gas powered two-stroke engine |
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Application publication date: 20160615 |